6 letter words:
subgum11,
5 letter words:
burgs8,
grubs8,
bruts7,
burst7,
rubus7,
strum7,
gurus6,
trugs6,
4 letter words:
bums8,
bugs7,
burg7,
grub7,
grum7,
gums7,
mugs7,
smug7,
brut6,
burs6,
bust6,
buts6,
must6,
muts6,
rubs6,
rums6,
smut6,
stub6,
stum6,
tubs6,
urbs6,
guru5,
gust5,
guts5,
rugs5,
trug5,
tugs5,
rust4,
ruts4,
urus4,
3 letter words:
bum7,
bug6,
gum6,
mug6,
bur5,
bus5,
but5,
mus5,
mut5,
rub5,
rum5,
sub5,
sum5,
tub5,
urb5,
gut4,
rug4,
tug4,
rut3,
uts3,
2 letter words:
mu4,
um4,
us2,
ut2,